.form {
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -160px 0 0 -160px;
    width: 320px;
    height: 320px;
    padding: 36px;
    box-shadow: 0 0 100px rgba(0,0,0,.08);
}

#components-form-login .login-form {
    max-width: 300px;
  }
#components-form-login .login-form-forgot {
float: right;
}
#components-form-login .login-form-button {
width: 100%;
}